Create File or Set Modification Time

Usage:  touch [-rfc2wh-] [ mmddhhmm[ss][[yy]yy]] ] pathname1 [ pathname2 ... ]

   touch sets the timestamp on a file to the current or specified
   date and time.  If the file doesn't exist, the normal action is
   to create it.

Options:

  mmddhhmmssyyyy  Month, Day, Hour, Minutes, Seconds and Year in
                  decimal.  (If the century isn't specified, 81 to
                  99 is interpreted as 1981 to 1999; 00 to 80 is
                  interpreted as as 2000 to 2080.)  If only 10
                  digits are specified, touch interprets the last
                  two digits as seconds if they're less than 60;
                  otherwise, it interprets them as the year.

  -r    Recursively touch contents of directories.
  -f    Force Read-only files to be touched also.
  -c    File is not created if it doesn't already exist.
  -2    Two second granularity for compatibility with FAT and
        HPFS filesystems.
  -w    Give a warning message but continue trying to touch any
        remaining files or directories even if problems were
        encountered with some of them.
  -h    Help.
  --    End of options.